Figure 1: (a) The picture shows a manifest preexcitation due to a right-sided posteroseptal accessory pathway (delta wave positive in I, II, aVL, and V2–V6 and negative in III, aVR, and V1). (b) The electrocardiogram after the ablation shows the absence of the prexcitation and also deep, negative T-wave in II, III, and aVF (b), due to “cardiac memory